Horn.



G. L. STEVENSON.

HORN.

APPLICATION FILED APB.15,-1910.

997,870, Patented July 11, 1911.

Fig. 1. i

WITNESSES INVENTOR 6. a? Goayglfilvmaoh.

I. JRNEY sTATEsP TE T OFFICE.

GEORGE L. s'ravimson, or rnovmnncn, imonn ISLAND, ASSIGNOB rot HOUSEHOLDCABINET woaxs, or raovibnilcn-miona 81,481). a coaroiu'rion or naomi Beit known that I, Gaoaor: L. Summon, a citizenof the United States,zeQiding atg the city of Providence, in the: v unty ProvidenceandjStete-of Rhode Isla d, have invented certain 'new' andusefulImprovements in Horns, of. which the following is a specification,reference being had therein to t V e accompanying drawing. Thisinvention relates to a sound amplifying device, commonly k m as a horn,the

, same being moreparti c larly adapted for use on sound reproducinginstrumentssuch as honographs or the like.

he ob ect of the invention is to construct a horn having unusualacoustic properties;

whereby the sound is not only amplified but where the phonetic,principles of clear, articulate, yet soft-andmellow sound are roduced,in contrary distinction to the e ect of the ordinary flaring orbell-mouthed horn which merely enlarges the sound without reit. Afurther object of the,invention is .to provide a born that in additionto being simple andinexpensive in construction takes up ut com arativelylittle room when used either insi e or outside of a phonographsupporting cabinet, or upon being stored away when not in-use. 4

With these and other objects in view, the invent-ion consists of certainnovel features :of construction, as will be more fully de- I inexpensivescribed and particularly pointed out in the appended claims. I

In theaccompanyin drawings: 'Fi 1- shows in improve born as mounte onthe insidem a cabinet or box on which the phonogr it'ph "*Rtsupported.illustrates thehorn as applied to. t e ordinary honograph instrument. 3is an en arged perspective view of :my the walls of the i same turnedinward at its mouth end forming a contracted opening instead of beingvided an improved hornwhich is preferably constructed with a contractedneck portion 1 adapted to be connected by a tube 2, or other suitablemeans to the needle carrying. 01

Of I

. tion through which the sound ,en zsectionalv 7 at opposite end through;.-w

soi'indis emitted, thus being sound transmittingarm 3. 'This neck por-.rooj'f of the mouth; gums and teeth ISLAND.

997,8 10, I {D dication ofy dt ht l iatent. Patented July 11, "i1. 'nnqm and A ril is, s mi in. 555,000.

.170 it may i tion is then gradually enlarged into the body-portionsubstantially rectangular in cross section,whose top and bottom lates 5and 6 are broad and substantially at and" whose sides 7 and 8 arecomparatively 1m; rowand'set substantially at'right angles to' ing astill further contraction {to the mouth 11. This last contraction,however isnot absolutely essential as these platesnily be straightcompletely to the mouth if I This horn may be made of any desired orsuitable material but I preferably construct the same like a, violinbody ofthin boards or plates of wood, and join the sections toget er'byglue or by other suitable means; It is found in practice, outside of theacous-' tic properties of this style of horn, that'it is i veryinexpensive in construction as 25 pared with the flaringbell-'shapedvhorm ialao that ittakes u very much less room than 'the oldstyle orn and can bestored away in much less-s ace.

is particularly adapted toused within'a cabinet or box 14 and connectedto the minij cal instrument 15 by atube, if desired, as: illustrated inFig.1, or it mix on the outside and above j improv construction orformefhor Fig. 3 in which there is a small a somewhat contracted n'outh'ora sen them 0 instrumentf itself, as illustrated in Fig-2, or in any'11 otwsuitable gconvenient way.

"has an enlarged thin flatfitubular sound amplifying ibody f,- tang'ularin cross seetion as illustrated in I similar in e ecti tojthe plifyingand while passing through the horn.

The shape of the horn as bestshown in i Fig. provides Wicle upper andlower l l l l plales 5 andii which, especially when made 2 of thin wood,enable a resonance to be ob tained which can be compared with that ol. j

a violin.

This resonance cannot be oh} llillllet'l lt'i'on'i a plui'a-liiy ofnarrow strips. Q

'neeiing sanl plates and also SQIVlllg as Therefore the said shape ofthe horn not only illCllUWn the sound Waves in the inannerliei'einhei'oi'e mentioned as comparable with the niellowing eli'ecl'produced upon the human voice hy ilie shape of the nionlh hut ale:allains lhe amplifying and resonanl ell'eel (llHZllllCLl from broad,thin, single SllQClb of Wood.

upper and lower plates forming sounding boards, and relalively narrowsides connecting said plates and also serving' as sounding hoards saidplates and sides diverging from the inlet end of said horn, the outletends of said sides being luineil inwardly to form a conti'acled inouih.

A hoi'n having relatively wide and flat upper and lower platesi'oi'ining sounding hoards, anil relatively narrow sides eonsoundinghoai'ils, said plales and silica (liwrging' from the inleteinl o'l saiillioi'n the oniiet ends ol' rZllLl sides ZLIHl said lop ainl l)()ll()lllplalm being LlIl'llL(l ii1\\ai ll lo l'ol'in a vonli'an-ieil mouth.

in testimony whereof l ailix niy einnm Having thus described myinvention, what i (-la in as new i015 iFaient, is:

l. A horn having relatively Wide and Hal ainl (leave to secure by Let (illOlHi l) L. S'lllY EN h'( I'Il. Witnesses:

\VALTER ll. BARNEY, llD'WIX 13. Lixcoiix.

